A simple driver circuit used for an organic electroluminescent (EL) device comprises a transparent substrate on which an anode, at least one organic layer, and a cathode are formed. The anode is made of a transparent conductive material. The cathode is made of a conductive metal material. The driver circuit has a resistor electrically connected with the EL device to form a series circuit. A DC power supply is connected with this series circuit.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A driver circuit for use with an organic electroluminescent (EL) device having a transparent substrate, an anode made of a transparent conductive material and formed on said substrate, at least one organic layer formed on said anode, and a cathode made of a conductive metal material and formed on said organic layer, said driver circuit comprising: a DC power supply connected in series with said organic EL device to drive it with a constant voltage.
2. A driver circuit for use with an organic electroluminescent (EL) device having a transparent substrate, an anode made of a transparent conductive material and formed on said substrate, at least one organic layer formed on said anode, and a cathode made of a conductive metal material and formed on said organic layer, said driver circuit comprising: a resistor electrically connected with said organic EL device to form a series circuit; and a DC power supply connected with said series circuit.
3. A driver circuit for use with an organic electroluminescent (EL) device having a transparent substrate, an anode made of a transparent conductive material and formed on said substrate, at least one organic layer formed on said anode, and a cathode made of a conductive metal material and formed on said organic layer, said driver circuit comprising: a resistor connected with at least one of said anode and said cathode of said organic EL device to form a series circuit; and a DC power supply connected with said series circuit.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
February 28, 2000
November 13, 2001
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